Home / 6,080.80-9,110.40-4,979.20

Finding the Fourth Proportional to 6,080.80, 9,110.40 and 4,979.20

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Solution

The fourth proportional to 6,080.80, 9,110.40 and 4,979.20 is: 7,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,080.80 : 9,110.40 = 4,979.20 : x
  2. Step 2: Convert to fraction form
    6,080.80/9,110.40 = 4,979.20/x
  3. Step 3: Cross multiply
    6,080.80x = 9,110.40 × 4,979.20
  4. Step 4: Simplify right side
    6,080.80x = 45,362,503.68
  5. Step 5: Solve for x
    x = 45,362,503.68/6,080.80
  6. Step 6: Final answer
    x = 7,459.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.